在穹顶内部，绿色植物可以制造小气候，吸收二氧化碳放出氧气。
Inside the dome, a jungle of greenery creates a microclimate that soaks up carbon dioxide and puts out oxygen.
相比之下，人的心脏只有四个心室，其中的两个心室收缩将血液压进动脉输送到肺部，在那里吸收氧气，放出二氧化碳，而另两个心室则将完成气体交换后的血液输送到到全身。
A human heart, by contrast, has four chambers. Two of these pump blood to the lungs, where it picks up oxygen, then the other two pump this oxygenated blood throughout the body.
豪厄格-古尔·伯格说海洋是地球的“心和肺”，释放出世界上一半的氧气，吸收30%人类制造的二氧化碳。
Hoegh-Guldberg said oceans were the Earth's "heart and lungs", producing half of the world's oxygen and absorbing 30 percent of man-made carbon dioxide.
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